"Origin: India. One of the 4 Heavenly Kings in Buddhism. He protects Mt. Meru's east side with a sword and Mani stone. He is also known as the god of governance. As king of the Gandharva, all the Gandharva and Pisaca serve him."
"As a Defender of the Law, Jikokuten is considered one of the Four Heavenly Kings in Buddhism. He holds a sword and a Mani stone, and has been assigned by Lord Sakra with protecting the eastern domains of Mount Neru. Jikokuten is also sometimes known as a Nation-Ruling God. When he governs a nation, he does so as King of the Gandharvas."
—Shin Megami Tensei IMAGINE
Jikokuten is the regular boss within Ichigaya Camp's gold-level instance and the only king that will appear without using the HDDs from the basement floor mini-bosses.
Jikokuten is faced in the Challenge QuestTokyo Cosmo. He can be found in the Higashisuna area of the Tokyo Bay region. He appears alongside the other three once all four have been defeated to be fought as a group. Jikokuten gives Flynn the reward they promised him after their defeat.
Jikokuten is one of the four Devas protecting the barrier that separates the human world from the demon world. Before the events of the game, Amane Kuzuryu managed to defeat him using the power of Jezebel, weakening the barrier enough for the Demon Summoning Program to be used with ease.
On Yuzu's 8th Day, Gin uses his demon companion, Take-Mikazuchi, as a temporary replacement for Jikokuten so as to restore the barrier separating both worlds.
"Jikokuten, or Dhrtarastra, is one of the Four Heavenly Kings in Buddhist lore. He dwells halfway up Mt. Meru in the center of the world and protects the East under the command of Sakra. He helps maintain the security of the nation. He is commonly shown wearing armor, with a sword in hand and an angry expression on his face."
—Devil Survivor 2 Compendium
Jikokuten is first summoned when Dera Daka attempts to use Nicaea on the 6th Day. However, Dera Daka is unaccustomed to the sheer might of the demons he has summoned and is killed after failing to seal the contract. The protagonist has to help him defeat the demons, including Jikokuten, alone. Dera Daka's final wish to the protagonist is to keep the events of their meeting secret from Airi.
Finishing this battle unlocks Jikokuten for fusion.